FXLS93421 datasheet(59/254 Pages) NXP

59 / 254 page

NXP Semiconductors

FXLS9xxxx

Dual channel inertial sensor

Location

Bit

Address

$16

COMMTYPE

RESERVED

COMMTYPE[2:0]

Unprogrammed OTP

Value: FXLS90xxx

Programmed OTP

Value: FXLS93xxx

Table 85. Communication type register (COMMTYPE)

11.2.11.1 Communication type (COMMTYPE[2:0])

The communication type bits select the available protocols for the device as shown in

Table 86.

Available communication protocols

COMMTYPE

[2:0]

DSI3[1]

PSI5[2]

32-bit SPI[3]

I2C[4]

Arming function availability

BUS_I

undervoltage

detection

Enabled based on ARM_CFG[2:0]

Disabled

Enabled based on ARM_CFG[2:0]

Disabled

Enabled based on ARM_CFG[2:0]

Disabled

Enabled

Enabled based on ARM_CFG[2:0]

Disabled

Enabled

Disabled

Table 86. Communication type (COMMTYPE[2:0])

[1]

See Section 12 "DSI3 protocol"

[2]

See Section 13 "PSI5 protocol"

[3]

See Section 14 "Standard 32-bit SPI protocol"

[4]

See Section 15 "Inter-integrated circuit (I2C) interface"

When writing to this register, care must be taken to prevent from inadvertently disabling

the desired communication mode. Communication mode register value changes which

disable a protocol, including writes to OTP, will not take effect until a device reset to

prevent from disabling a necessary communication method. Table 87 describes how

communication mode register changes are handled.

Original

COMMTYPE

New

COMMTYPE

Device effect

0 (DSI3 / SPI)

1 (PSI5 / SPI) A protocol change does not occur until a device reset (assuming the OTP is

programmed).

0 (DSI3 / SPI)

2, 3, 4, 5 (SPI,

DSI3 or PSI5)

A protocol change does not occur until a device reset (assuming the OTP is

programmed).

0 (DSI3 / SPI)

6, 7 (I2C)

A protocol change does not occur until a device reset (assuming the OTP is

programmed).

1 (PSI5 / SPI)

5 (PSI5)

A protocol change does not occur until a device reset (assuming the OTP is

programmed).

2, 3, 4, 5 (SPI)

Any

No protocol change occurs.

6, 7 (I2C)

Any

No protocol change occurs.

Table 87. COMMTYPEs and effect on device

FXLS9xxxx

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 6 — 8 February 2021

59 / 254

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